Chevrolet Uplander ignition disabled and won't start due to anti-theft malfunction on Chevrolet Uplander

Submitted by Vehicle Owner · Jun 23, 2025
Published by RepairPal

Problem overview

Some Chevrolet Uplander owners report experiencing ignition issues due to anti-theft malfunctions, which can prevent the vehicle from starting. Common causes include a binding steering column or lock, ignition switch problems, or issues with the ignition key. Additionally, the theft deterrent system may disable the fuel pump, ignition system, or starter if unauthorized access is detected. In some cases, the anti-theft control module may lose memory, resulting in an error code indicating that starting is disabled due to the theft system. To address these issues, owners may find that resetting the anti-theft system or performing a relearn procedure can help clear error messages. Furthermore, holding the key in the lock for a few seconds to allow the system to detect the RF signal from the key fob may also resolve the problem.

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